spring 画面遷移　パス

不明点

ECサイトを作っているのですが
新規会員登録をする際に@{/user/regist/input/customer}の画面に遷移することが出来ません。
パスを変えたりもしたのですがうまくいきません。
助言をお願いいたします。

HTML
1<!DOCTYPE html>
2<html xmlns:th="http://www.thymeleaf.org">
3<head>
4<meta charset="UTF-8" />
5</head>
6<body>
7<div th:fragment="layout-header" class="container">
8    <h1 class="site_title">ショップ</h1>
9    <div th:if="${session.user != null and session.user.authority == 2}" class="user_info">
10        <a th:href="@{/user/detail/customer/{id}(id=${session.user.id})}" th:text="${session.user.name}"></a>さん、ようこそ | <a th:href="@{/logout}">ログアウト</a>
11    </div>
12    <div th:if="${session.user != null and (session.user.authority == 0 or session.user.authority == 1)}" class="user_info">
13        <a th:href="@{/user/detail/admin/{id}(id=${session.user.id})}" th:text="${session.user.name}"></a>さん、ようこそ | <a th:href="@{/logout}">ログアウト</a>
14    </div>
15    <div th:if="${session.user == null}" class="user_info">
16        <a th:href="@{/login}">ログイン</a> | <a th:href="@{/user/regist/input/customer}">新規会員登録</a>
17    </div>
18</div>
19</body>
20</html>

Controller
1package jp.co.sss.shop.controller.user;
2import javax.servlet.http.HttpSession;
3import javax.validation.Valid;
4import org.springframework.beans.BeanUtils;
5import org.springframework.beans.factory.annotation.Autowired;
6import org.springframework.stereotype.Controller;
7import org.springframework.ui.Model;
8import org.springframework.validation.BindingResult;
9import org.springframework.web.bind.annotation.ModelAttribute;
10import org.springframework.web.bind.annotation.RequestMapping;
11import org.springframework.web.bind.annotation.RequestMethod;
12import org.springframework.web.servlet.mvc.support.RedirectAttributes;
13import jp.co.sss.shop.entity.User;
14import jp.co.sss.shop.form.UserForm;
15import jp.co.sss.shop.repository.UserRepository;
16/**
17* 一般会員 新規登録機能(非会員)のコントローラクラス
18*
19* @author LenaKurata
20*/
21@Controller
22public class UserRegistCustomerController {
23    /**
24     * 会員情報
25     */
26    @Autowired
27    UserRepository userRepository;
28    @Autowired
29    HttpSession session;
30    
31    /**
32     * 会員情報入力画面表示処理
33     *
34     * @return "user/regist/user_regist_input_customer" 会員情報 登録入力画面へ
35     */
36    @RequestMapping(path = "/user/regist/input/customer",method=RequestMethod.GET)
37    public String registInput() {
38        return "user/regist/user_regist_input_customer";
39    }
40    
41    /**
42     * POSTメソッドを利用して会員情報入力画面に戻る処理
43     *
44     * @param form 会員情報
45     * @return "user/regist/user_regist_input_customer" 会員情報 登録入力画面へ
46     */
47    @RequestMapping(path = "/user/regist/input/customer", method = RequestMethod.POST)
48    public String registInput(UserForm form) {
49        return "user/regist/user_regist_input_customer";
50    }
51    /**
52     * 会員情報 登録確認処理
53     *
54     * @param form   会員情報フォーム
55     * @param result 入力チェック結果
56     * @return 入力値エラーあり："redirect:/user/regist/input/customer" 会員情報登録画面へ
57     *         入力値エラーなし："user/regist/user_regist_check_customer" 会員情報 登録確認画面へ
58     */
59    @RequestMapping(path = "/user/regist/check/customer", method = RequestMethod.POST)
60    public String registCheck(@Valid @ModelAttribute UserForm form, BindingResult result,
61            RedirectAttributes redirectAttributes) {
62        // 入力値にエラーがあった場合、会員情報 入力画面表示処理に戻る
63        if (result.hasErrors()) {
64                redirectAttributes.addFlashAttribute("org.springframework.validation.BindingResult.userForm", result);
65                redirectAttributes.addFlashAttribute("userForm", form);
66                return "redirect:/user/regist/input/customer";
67                }
68                return "user/regist/user_regist_check_customer";
69                }
70    /**
71     * 会員情報登録完了処理
72     *
73     * @param form 会員情報
74     * @return "redirect:/user/regist/complete/customer" 会員情報 登録完了画面へ
75     */
76    @RequestMapping(path = "/user/regist/complete/customer", method = RequestMethod.POST)
77    public String registComplete(@ModelAttribute UserForm form) {
78        // 会員情報の生成
79        User user = new User();
80        // 入力値を会員情報にコピー
81        BeanUtils.copyProperties(form, user);
82        // 会員情報を保存
83        userRepository.save(user);
84        return "redirect:/user/regist/complete/customer";
85    }
86    /**
87     * 会員情報登録完了画面表示
88     *
89     * @param form 会員情報
90     * @return "user/regist/user_regist_complete_customer" 会員情報 登録完了画面へ
91     */
92    @RequestMapping(path = "/user/regist/complete/customer", method = RequestMethod.GET)
93    public String registCompleteRedirect() {
94        return "user/regist/user_regist_complete_customer";
95    }
96}

HTML
1<!DOCTYPE html>
2<html xmlns:th="http://www.thymeleaf.org"
3   th:replace="{common/layout_5block :: layout({::body/content()})}">
4<head>
5<title>会員登録入力 | ショップ</title>
6<meta charset="UTF-8" />
7</head>
8<body class="customer user_regist_input_customer">
9        <h2 class="title">会員登録入力</h2>
10        <div class="user_info_form_area">
11            <form method="post" th:action="@{/user/regist/check/customer}" th:object="${userForm}" class="user_info_form">
12                 <ul th:if="${#fields.hasErrors('*')}"  th:class="input_list" >
13                     <li th:each="err : ${#fields.errors('*')}" th:text="${err}" th:class="error_list" ></li>
14                </ul>
15            
16                    <ul class="input_list">
17                        <li>
18                            <label>
19                                <span class="input_title">メールアドレス</span>
20                                <input type="text" name="email" th:value="${userForm.email}" th:field="*{email}" />
21                            </label>
22                        </li>
23                        <li>
24                            <label>
25                                <span class="input_title">パスワード</span>
26                                <input type="password" name="password" th:value="${userForm.password}" />
27                            </label>
28                        </li>
29                        <li>
30                            <label>
31                                <span class="input_title">氏名</span>
32                                <input type="text" name="name" th:value="${userForm.name}" />
33                            </label>
34                        </li>
35                        <li>
36                            <label>
37                                <span class="input_title">郵便番号</span>
38                                <input type="text" name="postalCode" th:value="${userForm.postalCode}" />
39                            </label>
40                        </li>
41                        <li>
42                            <label>
43                                <span class="input_title">住所</span>
44                                <textarea name="address" rows="6" th:text="${userForm.address}"></textarea>
45                            </label>
46                        </li>
47                        <li>
48                            <label>
49                                <span class="input_title">電話番号</span>
50                                <input type="text" name="phoneNumber" th:value="${userForm.phoneNumber}" />
51                            </label>
52                        </li>
53                    </ul>
54                <input type="submit" value="確認" class="send_button" />
55            </form>
56            <form th:action="@{/user/list}">
57                <input type="submit" value="戻る" class="back_button"/>
58            </form>
59        </div>
60</body>
61</html>

エラーメッセージ
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Thu Nov 14 15:06:49 JST 2019
There was an unexpected error (type=Internal Server Error, status=500).
An error happened during template parsing (template: "class path resource [templates/user/regist/user_regist_input_customer.html]")
org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/user/regist/user_regist_input_customer.html]")
at